2 * libretro core glue for PicoDrive
5 * (C) Daniel De Matteis, 2013
7 * This work is licensed under the terms of MAME license.
8 * See COPYING file in the top-level directory.
11 #define _GNU_SOURCE 1 // mremap
22 #include <sys/types.h>
26 #include <libkern/OSCacheControl.h>
30 #include "3ds/3ds_utils.h"
35 int svcDuplicateHandle(unsigned int* out, unsigned int original);
36 int svcCloseHandle(unsigned int handle);
37 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
38 unsigned int size, unsigned int type, unsigned int perm);
39 void* linearMemAlign(size_t size, size_t alignment);
40 void linearFree(void* mem);
42 static int ctr_svchack_successful = 0;
45 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
47 #include <psp2/kernel/sysmem.h>
50 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
54 #include <pico/pico_int.h>
55 #include <pico/state.h>
56 #include "../common/input_pico.h"
57 #include "../common/version.h"
60 static retro_log_printf_t log_cb;
61 static retro_video_refresh_t video_cb;
62 static retro_input_poll_t input_poll_cb;
63 static retro_input_state_t input_state_cb;
64 static retro_environment_t environ_cb;
65 static retro_audio_sample_batch_t audio_batch_cb;
67 #define VOUT_MAX_WIDTH 320
68 #define VOUT_MAX_HEIGHT 240
70 static const float VOUT_PAR = 0.0;
71 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
72 static const float VOUT_CRT = (224.0f * 1.29911f);
74 bool show_overscan = false;
76 static void *vout_buf;
77 static int vout_width, vout_height, vout_offset;
78 static float user_vout_width = 0.0;
81 static short sndBuffer[2*44100/50];
83 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
86 static void snd_write(int len);
94 /* functions called by the core */
96 void cache_flush_d_inval_i(void *start, void *end)
99 size_t len = (char *)end - (char *)start;
100 #if defined(__BLACKBERRY_QNX__)
101 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
102 #elif defined(__MACH__)
103 sys_dcache_flush(start, len);
104 sys_icache_invalidate(start, len);
106 ctr_flush_invalidate_cache();
108 sceKernelSyncVMDomain(sceBlock, start, len);
110 __clear_cache(start, end);
116 /* mmap() replacement for Windows
118 * Author: Mike Frysinger <vapier@gentoo.org>
119 * Placed into the public domain
123 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
124 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
125 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
126 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
129 #define PROT_READ 0x1
130 #define PROT_WRITE 0x2
131 /* This flag is only available in WinXP+ */
132 #ifdef FILE_MAP_EXECUTE
133 #define PROT_EXEC 0x4
135 #define PROT_EXEC 0x0
136 #define FILE_MAP_EXECUTE 0
139 #define MAP_SHARED 0x01
140 #define MAP_PRIVATE 0x02
141 #define MAP_ANONYMOUS 0x20
142 #define MAP_ANON MAP_ANONYMOUS
143 #define MAP_FAILED ((void *) -1)
145 #ifdef __USE_FILE_OFFSET64
146 # define DWORD_HI(x) (x >> 32)
147 # define DWORD_LO(x) ((x) & 0xffffffff)
149 # define DWORD_HI(x) (0)
150 # define DWORD_LO(x) (x)
153 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
155 uint32_t flProtect, dwDesiredAccess;
160 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
163 if (!(flags & MAP_ANON) || offset)
165 } else if (flags & MAP_ANON)
168 if (prot & PROT_WRITE) {
169 if (prot & PROT_EXEC)
170 flProtect = PAGE_EXECUTE_READWRITE;
172 flProtect = PAGE_READWRITE;
173 } else if (prot & PROT_EXEC) {
174 if (prot & PROT_READ)
175 flProtect = PAGE_EXECUTE_READ;
176 else if (prot & PROT_EXEC)
177 flProtect = PAGE_EXECUTE;
179 flProtect = PAGE_READONLY;
181 end = length + offset;
184 mmap_fd = INVALID_HANDLE_VALUE;
186 mmap_fd = (HANDLE)_get_osfhandle(fd);
187 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
191 if (prot & PROT_WRITE)
192 dwDesiredAccess = FILE_MAP_WRITE;
194 dwDesiredAccess = FILE_MAP_READ;
195 if (prot & PROT_EXEC)
196 dwDesiredAccess |= FILE_MAP_EXECUTE;
197 if (flags & MAP_PRIVATE)
198 dwDesiredAccess |= FILE_MAP_COPY;
199 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
207 static void munmap(void *addr, size_t length)
209 UnmapViewOfFile(addr);
210 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
212 #elif defined(NO_MMAP)
213 #define PROT_EXEC 0x04
217 #define MAP_PRIVATE 0
218 #define MAP_ANONYMOUS 0
220 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
225 void munmap(void *base_addr, size_t len)
230 int mprotect(void *addr, size_t len, int prot)
232 /* stub - not really needed at this point since this codepath has no dynarecs */
238 #ifndef MAP_ANONYMOUS
239 #define MAP_ANONYMOUS MAP_ANON
245 unsigned int requested_map;
249 pico_mmap_t pico_mmaps[] = {
255 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
259 if (ctr_svchack_successful)
261 pico_mmap_t* pico_mmap;
263 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
265 if ((pico_mmap->requested_map == addr))
267 unsigned int ptr_aligned, tmp;
268 unsigned int currentHandle;
269 unsigned int perm = 0b011;
274 size = (size + 0xFFF) & ~0xFFF;
275 pico_mmap->buffer = malloc(size + 0x1000);
276 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
278 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
280 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
283 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
287 svcCloseHandle(currentHandle);
288 return (void*)pico_mmap->requested_map;
296 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
298 if (ctr_svchack_successful)
300 pico_mmap_t* pico_mmap;
302 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
304 if ((pico_mmap->requested_map == (unsigned int)ptr))
306 unsigned int ptr_aligned;
307 unsigned int currentHandle;
310 oldsize = (oldsize + 0xFFF) & ~0xFFF;
311 newsize = (newsize + 0xFFF) & ~0xFFF;
312 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
314 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
316 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
318 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
322 pico_mmap->buffer = tmp;
323 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
325 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
327 svcCloseHandle(currentHandle);
334 return realloc(ptr, newsize);
337 void plat_munmap(void *ptr, size_t size)
339 if (ctr_svchack_successful)
341 pico_mmap_t* pico_mmap;
343 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
345 if ((pico_mmap->requested_map == (unsigned int)ptr))
347 unsigned int ptr_aligned;
348 unsigned int currentHandle;
350 size = (size + 0xFFF) & ~0xFFF;
351 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
353 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
355 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
357 svcCloseHandle(currentHandle);
359 free(pico_mmap->buffer);
360 pico_mmap->buffer = NULL;
370 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
372 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
376 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
377 if (ret == MAP_FAILED) {
379 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
383 if (addr != 0 && ret != (void *)addr) {
385 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
397 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
400 void *ret = mremap(ptr, oldsize, newsize, 0);
401 if (ret == MAP_FAILED)
407 size_t preserve_size;
409 preserve_size = oldsize;
410 if (preserve_size > newsize)
411 preserve_size = newsize;
412 tmp = malloc(preserve_size);
415 memcpy(tmp, ptr, preserve_size);
417 munmap(ptr, oldsize);
418 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
419 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
420 if (ret == MAP_FAILED) {
424 memcpy(ret, tmp, preserve_size);
430 void plat_munmap(void *ptr, size_t size)
437 int plat_mem_set_exec(void *ptr, size_t size)
440 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
441 if (ret == 0 && log_cb)
442 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
445 if (ctr_svchack_successful)
447 unsigned int currentHandle;
448 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
449 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
450 size, MEMOP_PROT, 0b111);
451 svcCloseHandle(currentHandle);
452 ctr_flush_invalidate_cache();
458 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
463 int ret = sceKernelOpenVMDomain();
465 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
466 if (ret != 0 && log_cb)
467 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
472 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
474 memset(vout_buf, 0, 320 * 240 * 2);
475 vout_width = is_32cols ? 256 : 320;
476 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
477 if (show_overscan == true) line_count += 16;
478 if (show_overscan == true) start_line -= 8;
480 vout_height = line_count;
481 vout_offset = vout_width * start_line;
483 // Update the geometry
484 struct retro_system_av_info av_info;
485 retro_get_system_av_info(&av_info);
486 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
489 void emu_32x_startup(void)
493 void lprintf(const char *fmt, ...)
498 vsprintf(buffer, fmt, ap);
499 /* TODO - add 'level' param for warning/error messages? */
501 log_cb(RETRO_LOG_INFO, "%s", buffer);
506 void retro_set_environment(retro_environment_t cb)
508 static const struct retro_variable vars[] = {
509 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
510 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
511 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
512 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
513 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
514 { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
515 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
516 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
518 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
525 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
528 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
529 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
530 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
531 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
532 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
534 unsigned retro_api_version(void)
536 return RETRO_API_VERSION;
539 void retro_set_controller_port_device(unsigned port, unsigned device)
543 void retro_get_system_info(struct retro_system_info *info)
545 memset(info, 0, sizeof(*info));
546 info->library_name = "PicoDrive";
548 #define GIT_VERSION ""
550 info->library_version = VERSION GIT_VERSION;
551 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
552 info->need_fullpath = true;
555 void retro_get_system_av_info(struct retro_system_av_info *info)
557 memset(info, 0, sizeof(*info));
558 info->timing.fps = Pico.m.pal ? 50 : 60;
559 info->timing.sample_rate = 44100;
560 info->geometry.base_width = vout_width;
561 info->geometry.base_height = vout_height;
562 info->geometry.max_width = vout_width;
563 info->geometry.max_height = vout_height;
565 float common_width = vout_width;
566 if (user_vout_width != 0)
567 common_width = user_vout_width;
569 info->geometry.aspect_ratio = common_width / vout_height;
573 struct savestate_state {
574 const char *load_buf;
580 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
582 struct savestate_state *state = file;
583 size_t bsize = size * nmemb;
585 if (state->pos + bsize > state->size) {
587 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
588 state->pos + bsize, state->size);
589 bsize = state->size - state->pos;
594 memcpy(p, state->load_buf + state->pos, bsize);
599 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
601 struct savestate_state *state = file;
602 size_t bsize = size * nmemb;
604 if (state->pos + bsize > state->size) {
606 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
607 state->pos + bsize, state->size);
608 bsize = state->size - state->pos;
613 memcpy(state->save_buf + state->pos, p, bsize);
618 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
620 struct savestate_state *state = file;
621 size_t bsize = size * nmemb;
627 size_t state_eof(void *file)
629 struct savestate_state *state = file;
631 return state->pos >= state->size;
634 int state_fseek(void *file, long offset, int whence)
636 struct savestate_state *state = file;
643 state->pos += offset;
646 state->pos = state->size + offset;
649 return (int)state->pos;
652 /* savestate sizes vary wildly depending if cd/32x or
653 * carthw is active, so run the whole thing to get size */
654 size_t retro_serialize_size(void)
656 struct savestate_state state = { 0, };
659 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
666 bool retro_serialize(void *data, size_t size)
668 struct savestate_state state = { 0, };
671 state.save_buf = data;
675 ret = PicoStateFP(&state, 1, NULL, state_write,
680 bool retro_unserialize(const void *data, size_t size)
682 struct savestate_state state = { 0, };
685 state.load_buf = data;
689 ret = PicoStateFP(&state, 0, state_read, NULL,
690 state_eof, state_fseek);
695 void retro_cheat_reset(void)
699 void retro_cheat_set(unsigned index, bool enabled, const char *code)
703 /* multidisk support */
704 static bool disk_ejected;
705 static unsigned int disk_current_index;
706 static unsigned int disk_count;
707 static struct disks_state {
711 static bool disk_set_eject_state(bool ejected)
714 disk_ejected = ejected;
718 static bool disk_get_eject_state(void)
723 static unsigned int disk_get_image_index(void)
725 return disk_current_index;
728 static bool disk_set_image_index(unsigned int index)
730 enum cd_img_type cd_type;
733 if (index >= sizeof(disks) / sizeof(disks[0]))
736 if (disks[index].fname == NULL) {
738 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
740 // RetroArch specifies "no disk" with index == count,
741 // so don't fail here..
742 disk_current_index = index;
747 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
751 cd_type = PicoCdCheck(disks[index].fname, NULL);
752 if (cd_type != CIT_NOT_CD)
753 ret = cdd_load(disks[index].fname, cd_type);
756 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
760 disk_current_index = index;
764 static unsigned int disk_get_num_images(void)
769 static bool disk_replace_image_index(unsigned index,
770 const struct retro_game_info *info)
774 if (index >= sizeof(disks) / sizeof(disks[0]))
777 if (disks[index].fname != NULL)
778 free(disks[index].fname);
779 disks[index].fname = NULL;
782 disks[index].fname = strdup(info->path);
783 if (index == disk_current_index)
784 ret = disk_set_image_index(index);
790 static bool disk_add_image_index(void)
792 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
799 static struct retro_disk_control_callback disk_control = {
800 disk_set_eject_state,
801 disk_get_eject_state,
802 disk_get_image_index,
803 disk_set_image_index,
805 disk_replace_image_index,
806 disk_add_image_index,
809 static void disk_tray_open(void)
812 log_cb(RETRO_LOG_INFO, "cd tray open\n");
816 static void disk_tray_close(void)
819 log_cb(RETRO_LOG_INFO, "cd tray close\n");
824 static const char * const biosfiles_us[] = {
825 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
827 static const char * const biosfiles_eu[] = {
828 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
830 static const char * const biosfiles_jp[] = {
831 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
834 static void make_system_path(char *buf, size_t buf_size,
835 const char *name, const char *ext)
837 const char *dir = NULL;
839 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
840 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
843 snprintf(buf, buf_size, "%s%s", name, ext);
847 static const char *find_bios(int *region, const char *cd_fname)
849 const char * const *files;
850 static char path[256];
854 if (*region == 4) { // US
855 files = biosfiles_us;
856 count = sizeof(biosfiles_us) / sizeof(char *);
857 } else if (*region == 8) { // EU
858 files = biosfiles_eu;
859 count = sizeof(biosfiles_eu) / sizeof(char *);
860 } else if (*region == 1 || *region == 2) {
861 files = biosfiles_jp;
862 count = sizeof(biosfiles_jp) / sizeof(char *);
867 for (i = 0; i < count; i++)
869 make_system_path(path, sizeof(path), files[i], ".bin");
870 f = fopen(path, "rb");
874 make_system_path(path, sizeof(path), files[i], ".zip");
875 f = fopen(path, "rb");
882 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
890 static void sram_reset()
897 SRam.changed = '\0' ;
898 SRam.eeprom_type = '\0';
900 SRam.eeprom_bit_cl = '\0';
901 SRam.eeprom_bit_in = '\0';
902 SRam.eeprom_bit_out = '\0';
906 bool retro_load_game(const struct retro_game_info *info)
908 enum media_type_e media_type;
909 static char carthw_path[256];
912 struct retro_input_descriptor desc[] = {
913 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
914 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
915 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
916 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
917 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
918 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
919 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
920 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
921 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
922 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
923 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
924 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
926 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
927 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
928 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
929 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
930 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
931 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
932 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
933 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
934 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
935 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
936 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
937 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
942 struct retro_input_descriptor desc_sms[] = {
943 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
944 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
945 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
946 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
947 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
948 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
949 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
951 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
952 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
953 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
954 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
955 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
956 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
957 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
964 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
965 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
967 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
971 if (info == NULL || info->path == NULL) {
973 log_cb(RETRO_LOG_ERROR, "info->path required\n");
977 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
978 if (disks[i].fname != NULL) {
979 free(disks[i].fname);
980 disks[i].fname = NULL;
984 disk_current_index = 0;
986 disks[0].fname = strdup(info->path);
988 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
990 media_type = PicoLoadMedia(info->path, carthw_path,
993 switch (media_type) {
996 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1000 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1002 case PM_BAD_CD_NO_BIOS:
1004 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1008 log_cb(RETRO_LOG_ERROR, "Load error\n");
1014 if (media_type == PM_MARK3)
1015 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1017 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1021 PicoWriteSound = snd_write;
1022 memset(sndBuffer, 0, sizeof(sndBuffer));
1023 PsndOut = sndBuffer;
1029 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1034 void retro_unload_game(void)
1038 unsigned retro_get_region(void)
1040 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1043 void *retro_get_memory_data(unsigned type)
1049 case RETRO_MEMORY_SAVE_RAM:
1050 if (PicoAHW & PAHW_MCD)
1051 data = Pico_mcd->bram;
1055 case RETRO_MEMORY_SYSTEM_RAM:
1056 if (PicoAHW & PAHW_SMS)
1069 size_t retro_get_memory_size(unsigned type)
1076 case RETRO_MEMORY_SAVE_RAM:
1077 if (PicoAHW & PAHW_MCD)
1081 if (Pico.m.frame_count == 0)
1084 // if game doesn't write to sram, don't report it to
1085 // libretro so that RA doesn't write out zeroed .srm
1086 for (i = 0, sum = 0; i < SRam.size; i++)
1087 sum |= SRam.data[i];
1089 return (sum != 0) ? SRam.size : 0;
1091 case RETRO_MEMORY_SYSTEM_RAM:
1092 if (PicoAHW & PAHW_SMS)
1093 return sizeof(Pico.vramb);
1095 return sizeof(Pico.ram);
1103 void retro_reset(void)
1108 static const unsigned short retro_pico_map[] = {
1122 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1124 static void snd_write(int len)
1126 audio_batch_cb(PsndOut, len / 4);
1129 static enum input_device input_name_to_val(const char *name)
1131 if (strcmp(name, "3 button pad") == 0)
1132 return PICO_INPUT_PAD_3BTN;
1133 if (strcmp(name, "6 button pad") == 0)
1134 return PICO_INPUT_PAD_6BTN;
1135 if (strcmp(name, "None") == 0)
1136 return PICO_INPUT_NOTHING;
1139 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1140 return PICO_INPUT_PAD_3BTN;
1143 static void update_variables(void)
1145 struct retro_variable var;
1148 var.key = "picodrive_input1";
1149 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1150 PicoSetInputDevice(0, input_name_to_val(var.value));
1153 var.key = "picodrive_input2";
1154 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1155 PicoSetInputDevice(1, input_name_to_val(var.value));
1158 var.key = "picodrive_sprlim";
1159 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1160 if (strcmp(var.value, "enabled") == 0)
1161 PicoOpt |= POPT_DIS_SPRITE_LIM;
1163 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1167 var.key = "picodrive_ramcart";
1168 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1169 if (strcmp(var.value, "enabled") == 0)
1170 PicoOpt |= POPT_EN_MCD_RAMCART;
1172 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1175 int OldPicoRegionOverride = PicoRegionOverride;
1177 var.key = "picodrive_region";
1178 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1179 if (strcmp(var.value, "Auto") == 0)
1180 PicoRegionOverride = 0;
1181 else if (strcmp(var.value, "Japan NTSC") == 0)
1182 PicoRegionOverride = 1;
1183 else if (strcmp(var.value, "Japan PAL") == 0)
1184 PicoRegionOverride = 2;
1185 else if (strcmp(var.value, "US") == 0)
1186 PicoRegionOverride = 4;
1187 else if (strcmp(var.value, "Europe") == 0)
1188 PicoRegionOverride = 8;
1191 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1193 var.key = "picodrive_region_fps";
1194 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1195 if (strcmp(var.value, "Auto") == 0)
1196 PicoRegionFPSOverride = 0;
1197 else if (strcmp(var.value, "NTSC") == 0)
1198 PicoRegionFPSOverride = 1;
1199 else if (strcmp(var.value, "PAL") == 0)
1200 PicoRegionFPSOverride = 2;
1203 // Update region, fps and sound flags if needed
1204 if (PicoRegionOverride != OldPicoRegionOverride ||
1205 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1212 float old_user_vout_width = user_vout_width;
1214 var.key = "picodrive_aspect";
1215 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1216 if (strcmp(var.value, "4/3") == 0)
1217 user_vout_width = VOUT_4_3;
1218 else if (strcmp(var.value, "CRT") == 0)
1219 user_vout_width = VOUT_CRT;
1221 user_vout_width = VOUT_PAR;
1225 var.key = "picodrive_overscan";
1226 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1227 if (strcmp(var.value, "enabled") == 0)
1228 show_overscan = true;
1230 show_overscan = false;
1233 if (user_vout_width != old_user_vout_width)
1235 // Update the geometry
1236 struct retro_system_av_info av_info;
1237 retro_get_system_av_info(&av_info);
1238 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1243 var.key = "picodrive_drc";
1244 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1245 if (strcmp(var.value, "enabled") == 0)
1246 PicoOpt |= POPT_EN_DRC;
1248 PicoOpt &= ~POPT_EN_DRC;
1252 if(!ctr_svchack_successful)
1253 PicoOpt &= ~POPT_EN_DRC;
1257 void retro_run(void)
1259 bool updated = false;
1262 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1267 PicoPad[0] = PicoPad[1] = 0;
1268 for (pad = 0; pad < 2; pad++)
1269 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1270 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1271 PicoPad[pad] |= retro_pico_map[i];
1275 video_cb((short *)vout_buf + vout_offset,
1276 vout_width, vout_height, vout_width * 2);
1279 static void check_system_specs(void)
1281 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1283 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1286 void retro_init(void)
1288 struct retro_log_callback log;
1292 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1294 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1299 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1302 ctr_svchack_successful = ctr_svchack_init();
1304 sceBlock = getVMBlock();
1307 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1308 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1309 | POPT_EN_32X|POPT_EN_PWM
1310 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1313 if (ctr_svchack_successful)
1315 PicoOpt |= POPT_EN_DRC;
1318 PicoAutoRgnOrder = 0x184; // US, EU, JP
1323 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1325 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1329 PicoDrawSetOutFormat(PDF_RGB555, 0);
1330 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1332 //PicoMessage = plat_status_msg_busy_next;
1333 PicoMCDopenTray = disk_tray_open;
1334 PicoMCDcloseTray = disk_tray_close;
1339 void retro_deinit(void)
1342 linearFree(vout_buf);